Dear list,
the Show class is extremely useful for exploring Haskell in a
terminal, but sometimes, I just want something fancier. For instance,
I'm currently dabbling with sound generation and it is only natural that
I want to hear the sound instead of seeing a textual representation.
Another example would be graphics, that are simply drawn on screen
whenever you evaluate their value.
Of course, this is simple to implement with a class
class Demonstrable a where
demo :: a -> IO ()
instance Demonstrable Sound where demo = play
instance Demonstrable Sound where demo = draw
instance Demonstrable GUI where demo = run
etc.
However, I don't want to reinvent the wheel, small as it may be, hence
my question: is there a package on hackage that already defines a class
similar to Demonstrable ? Or any other projects in this direction,
like, say, a fancy REPL built on wxHaskell?
Best regards,
Heinrich Apfelmus
--
http://apfelmus.nfshost.com